Although Subway does not provide the start date of its free cookie promotion, the promotion is ongoing as of 2015. To receive a free cookie, customers must visit Subway’s survey site, TellSubway.com, and answer a few questions about their most recent Subway visits.
The one-minute Subway survey is a way for customers to voice their opinions about the service at Subway restaurants. Customers can participate by entering the Subway store ID and other information from their receipts. Customers must take the survey within 30 days of their visits. After completing the survey, participants receive a code via email that they write on the receipt. The receipt then serves as a coupon for the free cookie when presented at the customer’s next visit.